Toxic air pollutant/source crosswalk: A screening tool for locating possible sources emitting toxic air pollutants. Second edition. Final report

This report presents the 2nd edition of the Air Toxic Pollutant/Source Crosswalk that associates emitting source categories with specific air-toxics compounds. This is a qualitative association and does not provide any information about the quantities of pollutants emitted. The crosswalk contains pollutant names, Chemical Abstract Service (CAS) numbers, Standard Industrial Classification (SIC) codes, and Source Classification Codes (SCC's). The report contains 15,000 associations for more than 1100 air-toxic compounds, and the second edition revises and expands the report. A software system, XATEF, containing the crosswalk has been developed for easy access and updating of the data. Use of the system is explained in the EPA report, Crosswalk Air Toxic Emission Factor Data Base Management System User's Manual. EPA is making available the system and data base records to agency users upon request. The purpose of the report is to offer a technical service to air pollution control agencies in performing preliminary assessments of the types and sources of toxic compounds in an area. The crosswalk helps agencies to identify the potential of pollutants to be emitted from sources in an area.